Stupid child. You aren’t ready, and if she’s dating you, she’s AT LEAST as unready as you are. Grow up a few more years.
Me and my girl friend are gunna have sex for first time but she's also gunna see if she is sexually into guys at same time or just into girls what do.it do?
More likely than not, you are GUNNA regret having sex with her.
Instead of Asking a bunch of strangers on the internet go ask your mom, I'm sure she'd love to hear what you and your girlfriend are planning on doing.